单项选择题 ( )包含工具与材料有各色瓦楞纸、美工刀、剪刀、直尺、垫板、乳胶、铅笔等。 A. 喷刷画 B. 工艺美术 C. 瓦楞纸立体造型 D. 纸浆画
问答题 Morphemes can be categorized into (1) (1 word) morphemes and bound morphemes. There are two types of bound morphemes, i.e. (2) (1 word) morphemes and (3) (1 word) morphemes. Inflectional morphemes are used to indicate the (4) (1 word) aspects of a word.
单项选择题 计算有抛物线与直线所围成图形的面积时,既可以选作为积分变量,也可以选作为积分变量。 A、正确 B、错误